Description: 本设计是16键盘简易计算器，利用一片AT89C51单片机，其并行口外接4×4矩阵式键盘，和八位七段共阴极LED数码管。
系统的功能是：（1）模拟的计算器能显示8位数字，开机运行时，只显示最低位为“0”，其余不显示；（2）4×4键盘分别表示：0到9，+，-，×，/，＝，CL；（3）第一次按下，显示“D1”,第二次按下，显示“D1D2”，第三次按下，显示“D1D2D3”…8个全显示完毕，再次按下按键时，给出 “嘀”的提示音；（4）可以对计算结果小于256的两个无符号数进行加、减、乘、除运算。-The design is simple calculator keyboard 16, using an AT89C51 single-chip, the external parallel port 4 × 4 matrix keyboard, and a total of eight team respectively cathode LED digital tube. The function of the system are: (1) analog calculator can display 8-digit run-time boot, only showed that the minimum bit to Platform: |
Size: 128000 |
Author:李玲玲 |
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Description: 本设计利用AT89C51单片机来控制液晶显示器和矩阵式键盘，实现了简易的计算器功能。通过键盘输入需要计算的计算式子，该式子会显示在液晶的第一行，当键入等于号后，计算结果会显示在液晶的第二行。本设计中液晶选用1602字符型液晶显示器，显示参与运算的数字以及最终的运算结果，键盘采用4*4矩阵式键盘。-This design using AT89C51 microcontroller to control the matrix liquid crystal display and keyboard, to achieve a simple calculator function.Keyboard input required by the calculating formula, the formula is displayed in the LCD of the first line, when the type is equal to number, the results will be displayed in the LCD of the second line.The design of LCD use 1602 character LCD display and the number of operations involved in computing the final result, the keyboard uses 4* 4 matrix keyboard. Platform: |
Size: 485376 |
Author:范红建 |
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